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I really don't think this question should have been closed. We should be able to re-evaluate decisions that were made years ago to decide if the community has changed its mind over time.
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Shane CDec 7 '11 at 18:00

I have however lately discovered that moderators are able to delete accepted answers (the answerer itself can't do that unless OP unaccepts the answer). So moderators have in some way an influence on the ultimately accepted answer for the case the OP reviews the question and accepts another answer.
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BalusCSep 11 '11 at 16:06

@Chiciray: Yes, that is true. But accepted answers get more leeway from me than other answers; to be deleted, it clearly has to be unhelpful (i.e. the question OP is just accepting the answer to raise their accept rate, not because the answer has merit).
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Robert HarveySep 11 '11 at 16:12

How about this question, which clearly states the only given answer was correct, yet it was not accepted? Should this possibly be an exception to this process?
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GaffiMar 31 '12 at 3:58

What about users that just asked a single question and haven't been online in the past year or six months or so, or deregistered their account or similar? The user is unlikely to come back (at least on that account), so it would make sense to allow a responsible user (or more than one?) to say that an answer answers the question. This function can possibly (also?) be given to users with high-rep overall and/or in that specific tag.
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DukelingApr 6 '13 at 15:16

Unless I did this wrong, 165k questions with no accepted answer have users that have only asked 1 question and haven't been online in 6 months and are thus potential candidates for the above. This is not to mention the countless other potential conditions that can also be considered.
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DukelingApr 6 '13 at 15:40

Whoops, it should be this -> 143k. All these questions have at least one answer.
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DukelingApr 6 '13 at 15:49